electromagnetism, current density is the amount of charge per unit time that flows through a unit area of a chosen cross section. The current density vector is...

In electrochemistry, exchange current density is a parameter used in the Tafel equation, Butler–Volmer equation and other electrochemical kinetics expressions...

Wiktionary, the free dictionary. Current density Displacement current (electric) and Magnetic current § Magnetic displacement current Electric shock Electrical...

hydrodynamics and electric currents in electromagnetism. As in those fields, the probability current (i.e. the probability current density) is related to the...

general relativity, the four-current (technically the four-current density) is the four-dimensional analogue of the current density, with units of charge per...

Displacement current density has the same units as electric current density, and it is a source of the magnetic field just as actual current is. However...

electromagnetism, polarization density (or electric polarization, or simply polarization) is the vector field that expresses the volumetric density of permanent or induced...

x} , J ( x ) {\displaystyle J(x)} is the current density at the point x {\displaystyle x} . The current density is parallel to the electric field by necessity...

electromagnetism, charge density is the amount of electric charge per unit length, surface area, or volume. Volume charge density (symbolized by the Greek...

In electromagnetism, an eddy current (also called Foucault's current) is a loop of electric current induced within conductors by a changing magnetic field...

Current density imaging (CDI) is an extension of magnetic resonance imaging (MRI), developed at the University of Toronto. It employs two techniques for...

the cathodic partial current density ic (positive) and the anodic partial current density ia (negative) gives the net current density i: i = ic + ia In the...

of a few skin depths. The skin depth is the thickness at which the current density is reduced by 63%. Even at relatively low frequencies used for power...

of magnetic fields (B, H), electric fields (E, D), charge density (ρ), and current density (J) is described by Maxwell's equations. The role of the magnetization...

Particle density (particle count), number of particles per unit volume Area-specific quantity, the quotient of a physical quantity and area Current density, the...

cross-sectional area of the disc and the current density. The equation for the on-axis magnetic flux density of a Bitter disc becomes much more complex...

{\displaystyle \mathbf {J} =\sigma \mathbf {E} ,} where J is the current density at a given location in a resistive material, E is the electric field...

tendency of an alternating electric current (AC) to become distributed within a conductor such that the current density is largest near the surface of the...

_{\mathrm {f} }\times {\hat {\mathbf {n} }},} where Kf is the surface free current density and the unit normal n ^ {\displaystyle {\hat {\mathbf {n} }}} points...

ρ {\displaystyle \rho } the electric charge density and J {\displaystyle \mathbf {J} } the current density. ε 0 {\displaystyle \varepsilon _{0}} is the...

Direct current (DC) is one-directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through...

streams Convection current, flow caused by unstable density variation due to temperature differences Current (mathematics), geometrical current in differential...

B or H magnetic fields. These two forms use the total current density and free current density, respectively. The B and H fields are related by the constitutive...

current. Magnetic currents produce an electric field analogously to the production of a magnetic field by electric currents. Magnetic current density...

Population density (in agriculture: standing stock or plant density) is a measurement of population per unit land area. It is mostly applied to humans...

corresponding flux density is a flux according to the transport definition. Given a current such as electric current—charge per time, current density would also...

magnetic flux density B at position r in 3D-space generated by a filamentary current I (for example due to a wire). A steady (or stationary) current is a continual...

A current filament is an inhomogeneity in the current density distribution lateral to the direction of the current flow (that is, orthogonal to the current...

This is a list of countries and dependencies ranked by population density, sorted by inhabitants per square kilometre or square mile. The list includes...

functional or by the inclusion of additive terms, is a current research topic. Classical density functional theory uses a similar formalism to calculate...